How to Play Star Battle
Overview
Star Battle is a logic puzzle where you place stars on a grid divided into colored regions. Each row, column, and region must contain exactly one star, and no two stars can touch each other, even diagonally.
Video Tutorial
Rules
- 1The grid is divided into colored regions.
- 2Place exactly 1 star in each row.
- 3Place exactly 1 star in each column.
- 4Place exactly 1 star in each colored region.
- 5Stars cannot touch each other horizontally, vertically, or diagonally.
No-Touch Zone
Stars cannot be adjacent in any direction, including diagonals:
✕
✕
✕
✕
⭐
✕
✕
✕
✕
All cells marked with ✕ cannot contain a star
Controls
ClickCycle cell: empty → star → X → empty
S KeyPlace a star in the selected cell
X KeyMark cell as definitely empty
DeleteClear the selected cell
SpaceCycle cell state
Ctrl+ZUndo last move
Solving Strategies
Region Exclusion
If a region only has one possible cell for a star, place it there.
Row/Column Counting
If a row or column only has one valid cell remaining, that must be the star.
Adjacency Blocking
When you place a star, all 8 surrounding cells cannot have stars. Mark them with X.
Cross-Region Logic
If a region's cells only appear in one row, the star for that row must be in that region.